<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script src="../js/vue.js"></script>
    <div id="app">
        <button v-on:click="getRandom">生成随机数</button>
        <div>生成的随机数是：{{count}}</div>
    </div>

    <script>
        let vm = new Vue({
            el: "#app",
            data: {
                count: 0
            },
            methods: {
                getRandom: function () {
                    this.count = Math.floor(Math.random() * 10);
                }
            }
        })
    </script>
</body>

</html>